<template>
    <div>
       <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

     <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
        </el-col>
      </el-row>

      
        <el-table :data="userlist" border stripe>
          <el-table-column label="#" type="index"></el-table-column>
          <el-table-column label="姓名" prop="username"></el-table-column>
          <el-table-column label="邮箱" prop="email"></el-table-column>
          <el-table-column label="电话" prop="mobile"></el-table-column>
          <el-table-column label="角色" prop="role_name"></el-table-column>
          <el-table-column label="状态" prop="mg_state">
            <template slot-scope="scope">
              <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
            </template>
          </el-table-column>
          <el-table-column label="操作">
            <template slot-scope="scope">
              <!-- 修改按钮 -->
                <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
              <!-- 删除按钮 -->
                <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
              <!-- 分配角色按钮 -->
              <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                <el-button @click="setRole(scope.row)" type="warning" icon="el-icon-setting" size="mini"></el-button>
              </el-tooltip>
            </template>
          </el-table-column>
        </el-table>
        <!-- 分页区域 -->
        <el-pagination 
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1,2,5,10]"
        :page-size="queryInfo.pagesize"
        layout="total,sizes,prev,pager,next,jumper"
        :total="total"
        >

        </el-pagination>
        <!-- 添加用户对话框 -->
        <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%"
        @close="addDialogClosed"
        >
          <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px" class="demo-ruleForm">
            <el-form-item label="用户名" prop="username">
              <el-input v-model="addForm.username"></el-input>
            </el-form-item>
            <el-form-item label="密码" prop="password">
              <el-input v-model="addForm.password"></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
              <el-input v-model="addForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
              <el-input v-model="addForm.mobile"></el-input>
            </el-form-item>
          </el-form>
          <span slot="footer" class="dialog-footer">
            <el-button @click="addDialogVisible=false">取消</el-button>
            <el-button type="primary" @click="addUser">确定</el-button>
          </span>
        </el-dialog>
        <!-- 修改用户的对话框 -->
        <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
          <el-form ref="editFormRef" :model="editForm" :rules="editFormRules" label-width="70px">
            <el-form-item label="用户名">
              <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
              <el-input v-model="editForm.email"></el-input>
            </el-form-item>
            <el-form-item label="手机" prop="mobile">
              <el-input v-model="editForm.mobile"></el-input>
            </el-form-item>
          </el-form>
          <span slot="footer" class="dialog-footer">
            <el-button @click="editDialogVisible=false">取消</el-button>
            <el-button type="primary" @click="editUserInfo">确定</el-button>
          </span>
        </el-dialog>
        <!-- 分配角色的对话框 -->
        <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="30%" @close="setRoleDialogClosed">
          <p>当前的用户：{{userInfo.username}}</p>
          <p>当前的角色：{{userInfo.role_name}}</p>
          <p>分配新角色：
            <el-select v-model="selectedRoleId" placeholder="请选择">
              <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id"></el-option>
            </el-select>
          </p>
          <span slot="footer" class="dialog-footer">
            <el-button @click="setRoleDialogVisible=false">取消</el-button>
            <el-button type="primary" @click="saveRoleInfo">确定</el-button>
          </span>
        </el-dialog>
    </div>
</template>
<script>
export default {
  created(){
    this.getUserList()
  },
  data () {
    //验证邮箱的规则
    var checkEmail = (rule,value,cb)=>{
      //验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if(regEmail.test(value)){
        //合法的邮箱
        return cb();
      }
      cb(new Error('请输入合法的邮箱'));
    }
    //验证手机号的规则
    var checkMobile = (rule,value,cb)=>{
      //验证手机号的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if(regMobile.test(value)){
        return cb();
      }
      cb(new Error('请输入合法的手机号'))
    }
    return {
        //获取用户列表的参数对象
      queryInfo:{
        query:'',
        pagenum:1,
        pagesize:2 
      },
      userlist:[],
      total:0,
      addDialogVisible:false,
      //添加用户的表单数据
      addForm:{
        username:'',
        password:'',
        email:'',
        mobile:''
      },
      //添加表单的验证规则
      addFormRules:{
        username:[
          {required:true,message:'请输入用户名',trigger:'blur'},
          {min:3,max:10,message:'用户名长度在3到10个字之间',trigger:'blur'}
        ],
        password:[
          {required:true,message:'请输入密码',trigger:'blur'},
          {min:6,max:15,message:'密码长度在6到15个字之间',trigger:'blur'}
        ],
        email:[
          {required:true,message:'请输入密码',trigger:'blur'},
          {validator:checkEmail,trigger:'blur'}
        ],
        mobile:[
          {required:true,message:'请输入密码',trigger:'blur'},
          {validator:checkMobile,trigger:'blur'}
        ]
      },
      editDialogVisible:false,
      editForm:{},
      editFormRules:{},
      editFormRules:{
        email:[
          {required:true,message:'请输入用户邮箱',trigger:'blur'},
          {validator:checkEmail,trigger:'blur'}
        ],
        mobile:[
          {required:true,message:'请输入用户手机',trigger:'blur'},
          {validator:checkMobile,trigger:'blur'}
        ]
      },
      setRoleDialogVisible:false,
      //需要被分配的角色的用户信息
      userInfo:{},
      rolesList:[],
      selectedRoleId:''
    };
  },
    methods:{
        async getUserList(){
            const {data:res} = await this.$http.get('users',{params:this.queryInfo})
            if(res.meta.status != 200){
                return this.$message.error('获取用户列表失败!')
            }
            this.userlist = res.data.users 
            this.total = res.data.total 
        },
        handleSizeChange(val){
          this.queryInfo.pagesize = val
          this.getUserList()
        },
        handleCurrentChange(val){
          this.queryInfo.pagenum = val 
          this.getUserList()
        },
        async userStateChanged(userinfo){
          const {data:res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
          if(res.meta.status != 200){
            userinfo.mg_state = !userinfo.mg_state
            return this.$message.error('更新用户状态失败')
          }
          this.$message.success('更新用户状态成功')
        },
        addDialogClosed(){
          this.$refs.addFormRef.resetFields()
        },
        addUser(){
          this.$refs.addFormRef.validate(async valid=>{
            if(!valid)return
            const {data:res} = await this.$http.post('users',this.addForm)
            if(res.meta.status != 201){
              this.$message.error('添加用户失败')
            } 
            this.$message.success('添加用户成功')
            this.addDialogVisible = false 
            this.getUserList()
          })
        },
        async showEditDialog(id){
          const {data:res} = await this.$http.get('users/'+id)
          if(res.meta.status != 200){
            return this.$message.error('查询用户信息失败')
          }
          console.log(res.data)
          this.editForm = res.data 
          this.editDialogVisible = true
        },
        editDialogClosed(){
          this.$refs.editFormRef.resetFields()
        },
        editUserInfo(){
          this.$refs.editFormRef.validate(async valid=>{
            if(!valid)return 
            const {data:res} = await this.$http.put('users/'+this.editForm.id,{email:this.editForm.email,mobile:this.editForm.mobile})
            if(res.meta.status != 200){
              return this.$message.error('更新用户信息失败')
            }
            this.editDialogVisible = false 
            this.getUserList()
            this.$message.success('更新用户信息成功')
          }) 
        },
        async removeUserById(id){
          const confirmResult = await this.$confirm('此操作将永久删除当前用户，是否继续?','提示',{
            confirmButtonText:'确定',
            cancelButtonText:'取消',
            type:'warning'
          }).catch(err=>console.log(err))
          if(confirmResult != 'confirm'){
            return this.$message.info('已取消了删除')
          }
          // console.log('确定了删除')
          const {data:res} = await this.$http.delete('users/'+id)
          if(res.meta.status != 200){
            return this.$message.error('删除用户失败')
          }
          this.$message.success('删除用户成功')
          this.getUserList()
        },
        async setRole(userInfo){
          this.userInfo = userInfo
          //在展示对话框之前获取所有的角色列表
          const {data:res} = await this.$http.get('roles')
          if(res.meta.status != 200){
            return this.$message.error('获取角色列表失败')
          }
          this.rolesList = res.data 
          console.log(this.rolesList)
          this.setRoleDialogVisible = true 
        },
        //监听分配角色对话框的关闭事件
        setRoleDialogClosed(){
          this.selectedRoleId = ''
          this.userInfo = {}
        },
        async saveRoleInfo(){
          if(!this.selectedRoleId){
            return this.$message.error('请选择要分配的角色')
          }
          const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{rid:this.selectedRoleId})
          if(res.meta.status != 200){
            return this.$message.error('更新角色失败')
          }
          this.$message.success('更新角色成功')
          this.getUserList()
          this.setRoleDialogVisible = false 
        }
    }
}
</script>
<style lang='less' scoped>
  .el-pagination{
    margin-top:15px;
  }
</style>